Question: At what point in history did Cologne have a population of 1.0817e+06?
Paraphrase: When was the population of Cologne was 1.0817e+06?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q365 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '1.0817e+06')) . ?s pq:P585 ?value}